Peel and chop the onion. Clean, wash and cut the bell peppers into strips. Wash asparagus, cut off woody ends. Cut asparagus into thin pieces. Chinese cabbage clean, wash and cut into fine strips.
Wash the meat, dab dry and cut into strips. Heat the oil in a large frying pan. Brown the meat in it, season with salt and pepper and take it out. Sauté the onion, asparagus and bell peppers in the frying fat.
Add the noodles and 500 ml of water, bring to the boil and stir in the stock. Simmer for 7-8 minutes. Add meat and Chinese cabbage 1 minute before end of cooking time. Wash the chives, dab dry and dip in oil
Season the pan with soy sauce and pepper. Sprinkle with chives and serve.